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way too hot, turn down the amps. im guessing ur tigging these welds? amps at about 50 for this light of stuff and make sure u have good gas flow. ill try to get into the shop do do some for ya and take some pics but been pretty busy packing. (moving to australia)

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Here are a couple of my practice beads, I have only a been tig welding for about a month. The stainless is some 1/8 scrap with 308L filler I got from a machine shop and the aluminum is some 1/16 6061 with 5356 filler. The T-Fillet weld looks slightly "Sandy" but it is because of the weld I ran on the backside.

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Aluminum is a blast isn't it. Your welds are looking good. It has always amazed me how 1/2 way through a weld you have to back off a little or the puddle gets to large. I know it is the heat and I understand the thermal dynamics of the weld. It's just so cool, welding a awesome!